Today's pollen forecast for Cardiff
Very high

Avoid long outdoor spells if you react to pollen.

Pollen mix

Grass
Very high58 grains/m3
Tree
Low0 grains/m3
Weed
Moderate10 grains/m3
How it travelsActiveWarm, dry weather can help plants release pollen into the air.
WindModerate13 mph wind
RainDryNo rain expected
TemperatureWarm21C max
What this meansAvoid long outdoor spells if you react to pollen.

What to do

Very high grass pollen risk today. Make this a take-action day if hay fever affects you.

  • Keep windows closed when you can, especially morning and evening.
  • Avoid mowing, parks, and drying washing outside.
  • Some breeze may carry pollen around locally, especially near parks, verges, and gardens.
  • Little rain is expected, so pollen is less likely to be washed out of the air.
Antihistamine?Use your usual prevention before symptoms start.
Season contextPeak UK grass-pollen season

5-day outlook

TuesdayHigh
GrassTreeWeed
WednesdayHigh
GrassTreeWeed
ThursdayVery high
GrassTreeWeed
FridayHigh
GrassTreeWeed
SaturdayHigh
GrassTreeWeed

Forecast refreshed 27 Jul 2026, 08:27 from cached local forecast data.